Thailand Cross-Border Payments and RTP ASEAN 2027 Market Intelligence

Corridor-by-corridor operator playbooks

PromptPay-PayNow Singapore (April 2021): the world's first cross-border bilateral RTP linkage; THB-SGD direct PvP settlement via BoT-MAS; mobile-number addressability. Use cases: Thai-Singapore tourism (Singapore is Thailand's third-largest tourism source), Thai-domiciled SME invoice flows. Pricing: 0.3-0.6% FX spread, no fixed fee under SGD 200 equivalent for many participating banks. Volume share: ~22% of total Thai cross-border QR FY2025.

PromptPay-DuitNow Malaysia (June 2021, expanded September 2022): BNM-PayNet counterpart. Originally QR-only; expanded to mobile-number remittance in 2022. Use cases: Thai-Malaysian cross-border trade (Sadao, Padang Besar corridor), Malaysian inbound tourism, Malaysian-Thai diaspora remittance. Pricing comparable to PayNow. Volume share: ~19%.

PromptPay-QRIS Indonesia (August 2022): BI counterpart; the ASEAN RPC anchor corridor. Indonesia is Thailand's fifth-largest tourism source. QRIS is the most-scanned merchant QR in ASEAN by volume; the Thai-Indonesia linkage gives Thai merchants reach into Indonesian outbound. Volume share: ~14%.

PromptPay-NAPAS Vietnam (March 2023) and PromptPay-FPS Hong Kong (December 2023): NAPAS opens the CLMV gateway plus the rapidly growing Vietnamese outbound tourism cohort; HK FPS routes Mainland-Chinese tourists transiting Hong Kong and HK-domiciled professional remittance to Thailand. Hong Kong corridor volume share: ~9%; Vietnam: ~11%.

PromptPay-UPI India (MoU June 2024, launch targeted late-2025): RBI-BoT bilateral. UPI is the world's largest RTP rail by transaction count. The India corridor is the most strategically consequential single bilateral for Thailand — India was the second-largest tourism source for Thailand in FY2025 with ~2.2M arrivals. Initial launch may be India-outbound only (Indian travellers scan Thai merchant QR via UPI app) before bidirectional rollout.

PromptPay-KHQR Cambodia (February 2020, expanded 2022) and Laos APN: CLMV migrant-worker remittance is the dominant use case; ~2-3M Cambodian and Lao migrant workers in Thailand send home ~USD 4-5B/year (cross-link to Thailand CLMV Remittance Corridor). RTP rails compress traditional MTO (money-transfer-operator) fees from 6-8% to under 1%.

BIS Project Nexus 2027 multilateral architecture

BIS Project Nexus, developed by the BIS Innovation Hub in Singapore, is a multilateral hub-and-spoke design that replaces pairwise bilateral linkages with a single any-to-any switch. Founding members: Thailand (BoT), Singapore (MAS), Malaysia (BNM), Philippines (BSP), and India (RBI as later-phase founding observer per Phase 3 report). Commercial launch target: 2027. Nexus connects each member's domestic RTP rail (PromptPay, PayNow, DuitNow, InstaPay, UPI) into a coordinated address-resolution layer with standardised messaging, FX, and settlement.

Economic argument for Nexus: bilateral linkages scale O(n^2) — connecting all five founders pairwise requires ten bilateral integrations; Nexus reduces this to five hub-spokes. Each new RTP rail adds one connection to Nexus, not n. Phase-two members likely include Indonesia (QRIS), Hong Kong (FPS), and Vietnam (NAPAS) — all of which already have bilateral linkages with Thailand and can be onboarded faster than greenfield. Nexus also standardises ISO 20022 messaging, KYC/AML metadata exchange, and FX-quote sourcing.

The competitive question for 2027: does Nexus suppress demand for new bilateral linkages (BoT shifts effort to Nexus and stops new pairwise builds) or does it complement them (bilaterals continue for high-volume corridors with bespoke pricing while Nexus handles the long tail). Our read: Thailand uses Nexus for new corridors (Philippines, Indonesia phase-in) while keeping PayNow, DuitNow, FPS bilaterals for their high-volume tourism flows.